Since 31, March 2022 and further to norms applicable from June, 1st 2022, all the rules for traveling from/to Italy can be found at the following link:
https://www.viaggiaresicuri.it/approfondimenti-insights/saluteinviaggio
Please note that FFP2 mask usage is still mandatory (until 30 Sept, 2022 - unless further extension) for traveling via public means of transportation with the exclusion of air transportation.